10k maple point coupon

Bittr

For whatsoever reason, I am not able to purchase the 10k maple point coupon from the cash shop, despite having enough Nx

Neospector

Maple Point coupons cannot be purchased with NX Credit, likely as a measure against fraud and chargeback.
Maple Point coupons can only be purchased with NX prepaid.

http://maplestory.nexon.net/news/22516/updated-v-185-maplestory-x-re-zero-patch-notes#meso

As part of this feature, we have added Maple Point Coupons to the Cash Shop. These items can only be purchased with NX Prepaid, and allow you to get a certain number of Maple Points.